import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/login.vue'
import Home from '../components/home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'

Vue.use(VueRouter)

// const routes = [
//   {
//     path:'/login',
//     component: Login
//   }
// ]

const router = new VueRouter({
  routes: [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    {
      path: '/home',
      component: Home,
      redirect:'/welcome',
      children: [
        { path: '/welcome', component: Welcome },
        { path:'/users', component:Users},
        { path:'/rights', component:Rights },
        { path:'/roles', component:Roles },
        { path:'/categories', component:Cate },
      ]
    }
  ]
})

//挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to：将要访问的路径
  // from：从哪个路径跳转而来
  // next：表示放行 next() -> 放行 next('/地址') 强制跳转页面
  if (to.path === '/login') return next();
  const tokenStr = window.sessionStorage.getItem('token');
  if (!tokenStr) return next('/login');
  next();
});

export default router
